[英]Does not contain definition for "HasDefaultValue"
I want to set a default value for a non nullable field in code first.我想首先在代码中为不可空字段设置默认值。
I have included Microsoft.EntityFrameworkCore
but I'm still getting我已经包含了
Microsoft.EntityFrameworkCore
但我仍然
Does not contain definition for 'HasDefaultValue'
不包含“HasDefaultValue”的定义
Using EF Core 2.2.6使用 EF 核心 2.2.6
using Microsoft.EntityFrameworkCore;
public partial class MyDbContext : DbContext
{
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<Agency>(entity =>
{
entity.HasOne(d => d.Region)
.WithMany(p => p.Agencies)
.HasForeignKey(d => d.RegionId)
.HasDefaultValue(1)
.HasConstraintName("FK_Agency_Region");
});
}
...
}
EF Core 6+英孚核心 6+
My issue here was I didn't add this package to my Repository project:我的问题是我没有将这个 package 添加到我的存储库项目中:
https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Relational/ https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Relational/
PM> Install-Package Microsoft.EntityFrameworkCore.Relational
Figured the correct syntax. 想出了正确的语法。 Was assigning the default value at wrong place.
在错误的位置分配了默认值。
entity.Property(e => e.RegionId).HasDefaultValue(1)
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